A thermomechanical constitutive model for cemented granular materials with quantifiable internal variables. Part II - Validation and localization analysis
(2014) In Journal of the Mechanics and Physics of Solids 70. p.382-405- Abstract
- We study the mechanical failure of cemented granular materials (e.g., sandstones) using a constitutive model based on breakage mechanics for grain crushing and damage mechanics for cement fracture. The theoretical aspects of this model are presented in Part I: Tengattini et al. (2014), A thermomechanical constitutive model for cemented granular materials with quantifiable internal variables, Part I - Theory (Journal of the Mechanics and Physics of Solids, http://dx.doi.org/10.1016/j.jmps.2014.05.021). In this Part II we investigate the constitutive and structural responses of cemented granular materials through analyses of Boundary Value Problems (BVPs). The multiple failure mechanisms captured by the proposed model enable the behavior of... (More)
- We study the mechanical failure of cemented granular materials (e.g., sandstones) using a constitutive model based on breakage mechanics for grain crushing and damage mechanics for cement fracture. The theoretical aspects of this model are presented in Part I: Tengattini et al. (2014), A thermomechanical constitutive model for cemented granular materials with quantifiable internal variables, Part I - Theory (Journal of the Mechanics and Physics of Solids, http://dx.doi.org/10.1016/j.jmps.2014.05.021). In this Part II we investigate the constitutive and structural responses of cemented granular materials through analyses of Boundary Value Problems (BVPs). The multiple failure mechanisms captured by the proposed model enable the behavior of cemented granular rocks to be well reproduced for a wide range of confining pressures. Furthermore, through comparison of the model predictions and experimental data, the micromechanical basis of the model provides improved understanding of failure mechanisms of cemented granular materials. In particular, we show that grain crushing is the predominant inelastic deformation mechanism under high pressures while cement failure is the relevant mechanism at low pressures. Over an intermediate pressure regime a mixed mode of failure mechanisms is observed. Furthermore, the micromechanical roots of the model allow the effects on localized deformation modes of various initial microstructures to be studied. The results obtained from both the constitutive responses and BVP solutions indicate that the proposed approach and model provide a promising basis for future theoretical studies on cemented granular materials. (C) 2014 Elsevier Ltd. All rights reserved. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/4713122
- author
- Das, Arghya ; Tengattini, Alessandro ; Nguyen, Giang D. ; Viggiani, Gioacchino ; Hall, Stephen LU and Einav, Itai
- organization
- publishing date
- 2014
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Cemented granular materials, Constitutive behavior, Microstructures, Energy methods, Fracture mechanisms
- in
- Journal of the Mechanics and Physics of Solids
- volume
- 70
- pages
- 382 - 405
- publisher
- Elsevier
- external identifiers
-
- wos:000341466200022
- scopus:84905387191
- ISSN
- 1873-4782
- DOI
- 10.1016/j.jmps.2014.05.022
- language
- English
- LU publication?
- yes
- id
- 36428d94-7e57-48ce-b18e-a79e1cd013d7 (old id 4713122)
- date added to LUP
- 2016-04-01 14:49:00
- date last changed
- 2022-02-12 05:37:51
@article{36428d94-7e57-48ce-b18e-a79e1cd013d7,
abstract = {{We study the mechanical failure of cemented granular materials (e.g., sandstones) using a constitutive model based on breakage mechanics for grain crushing and damage mechanics for cement fracture. The theoretical aspects of this model are presented in Part I: Tengattini et al. (2014), A thermomechanical constitutive model for cemented granular materials with quantifiable internal variables, Part I - Theory (Journal of the Mechanics and Physics of Solids, http://dx.doi.org/10.1016/j.jmps.2014.05.021). In this Part II we investigate the constitutive and structural responses of cemented granular materials through analyses of Boundary Value Problems (BVPs). The multiple failure mechanisms captured by the proposed model enable the behavior of cemented granular rocks to be well reproduced for a wide range of confining pressures. Furthermore, through comparison of the model predictions and experimental data, the micromechanical basis of the model provides improved understanding of failure mechanisms of cemented granular materials. In particular, we show that grain crushing is the predominant inelastic deformation mechanism under high pressures while cement failure is the relevant mechanism at low pressures. Over an intermediate pressure regime a mixed mode of failure mechanisms is observed. Furthermore, the micromechanical roots of the model allow the effects on localized deformation modes of various initial microstructures to be studied. The results obtained from both the constitutive responses and BVP solutions indicate that the proposed approach and model provide a promising basis for future theoretical studies on cemented granular materials. (C) 2014 Elsevier Ltd. All rights reserved.}},
author = {{Das, Arghya and Tengattini, Alessandro and Nguyen, Giang D. and Viggiani, Gioacchino and Hall, Stephen and Einav, Itai}},
issn = {{1873-4782}},
keywords = {{Cemented granular materials; Constitutive behavior; Microstructures; Energy methods; Fracture mechanisms}},
language = {{eng}},
pages = {{382--405}},
publisher = {{Elsevier}},
series = {{Journal of the Mechanics and Physics of Solids}},
title = {{A thermomechanical constitutive model for cemented granular materials with quantifiable internal variables. Part II - Validation and localization analysis}},
url = {{http://dx.doi.org/10.1016/j.jmps.2014.05.022}},
doi = {{10.1016/j.jmps.2014.05.022}},
volume = {{70}},
year = {{2014}},
}